Home / 918,876.04-1,378,314.12-287,839

Finding the Fourth Proportional to 918,876.04, 1,378,314.12 and 287,839

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Solution

The fourth proportional to 918,876.04, 1,378,314.12 and 287,839 is: 431,758.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,876.04 : 1,378,314.12 = 287,839 : x
  2. Step 2: Convert to fraction form
    918,876.04/1,378,314.12 = 287,839/x
  3. Step 3: Cross multiply
    918,876.04x = 1,378,314.12 × 287,839
  4. Step 4: Simplify right side
    918,876.04x = 396,732,557,986.68
  5. Step 5: Solve for x
    x = 396,732,557,986.68/918,876.04
  6. Step 6: Final answer
    x = 431,758.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.